Research Publications (Food Safety)

Available online 22 January 2019

Author(s): Qi Wang, Stephen James Forsythe, Xiao-Juan Zhao, Zi-Wei Wang, Dan Li, Dan Ma, Jia-Yue Cao, Jing Zeng

Toxins, Vol. 11, Pages 64: Mycotoxins and Mycotoxin Producing Fungi in Pollen: Review

Toxins doi: 10.3390/toxins11020064

Authors:
Aleksandar Ž. Kostić
Danijel D. Milinčić
Tanja S. Petrović
Vesna S. Krnjaja
Sladjana P. Stanojević
Miroljub B. Barać
Živoslav Lj. Tešić
Mirjana B. Pešić

, Ahead of Print.

Diet is a major determinant of intestinal microbiome composition. While studies have evaluated microbiome responses to diet variation, less is understood about how the act of feeding influences the microbiome, independent of diet type.

The characterization of native polycyclic aromatic hydrocarbon (PAH)-degrading bacteria is significant for understanding the PAH degradation process in the natural environment and developing effective remediation technologies. Most previous investigations of PAH-degrading bacteria in environmental samples employ pahAc, which encodes the α-subunit of PAH ring-hydroxylating dioxygenase, as a functional marker gene.

The lower convective layer (LCL) of the Atlantis II brine pool of the Red Sea is a unique environment in terms of high salinity, temperature, and high concentrations of heavy metals. Mercuric reductase enzymes functional in such extreme conditions could be considered a potential tool in the environmental detoxification of mercurial poisoning and might alleviate ecological hazards in the mining industry.

Cronobacter sakazakii is a xerotolerant neonatal pathogen epidemiologically linked to powdered infant food formula, often resulting in high mortality rates. Here, we used transcriptome sequencing (RNA-seq) to provide transcriptional insights into the survival of C. sakazakii in desiccated conditions. Our RNA-seq data show that about 22% of the total C. sakazakii genes were significantly upregulated and 9% were downregulated during desiccation survival.

Copper and alloys containing >60% copper by weight are antimicrobial. In aquaculture, copper alloys are used as part of corrosion-resistant cages or as part of copper coating. To test whether a copper alloy surface prevents the outbreak of parasitosis in the aquaculture of Larimichthys crocea, we covered the bottom of the aquaculture tank with sheets of copper alloy containing 74% to 78% copper, and we cultured L.

Atypical El Tor strains of Vibrio cholerae O1 harboring variant ctxB genes of cholera toxin (CT) have gradually become a major cause of recent cholera epidemics. Vibrio mimicus occasionally produces CT, encoded by ctxAB on CTXFE genome; toxin-coregulated pilus (TCP), a major intestinal colonization factor; and also the CTXFE-specific receptor. This study carried out extensive molecular characterization of CTXFE and ToxT regulon in V. mimicus ctx-positive (ctx+) strains (i.e., V.

, Volume 16, Issue 1, Page 42-53, January 2019.

, Volume 16, Issue 1, Page 74-80, January 2019.

, Volume 16, Issue 1, Page 1-4, January 2019.

Journal of Food Protection, Volume 82, Issue 2, Page 217-225, February 2019.

Journal of Food Protection, Volume 82, Issue 2, Page 207-216, February 2019.

Journal of Food Protection, Volume 82, Issue 2, Page 200-206, February 2019.

Journal of Food Protection, Volume 82, Issue 2, Page 194-199, February 2019.

Available online 22 January 2019

Author(s): Richard M. Gell, Ignazio Carbone

Abstract

Aflatoxins are mycotoxins that contaminate agricultural products when infected by toxigenic Aspergillus flavus. Methods for quantifying aflatoxin from culture using chromatography are available but are not optimized for population studies. We provide details of a method for preparation and quantitation of aflatoxin B1 from fungal cultures that satisfy those needs.

Steven C. Ricke, Kristina M. Feye, W. Evan Chaney, Zhaohao Shi, Hilary Pavlidis, Yichao Yang The accurate and rapid detection of Campylobacter spp. is critical for optimal surveillance throughout poultry processing in the United States. The further development of highly specific and sensitive assays to detect Campylobacter in poultry matrices has tremendous utility and potential for aiding the reduction of foodborne illness.

ABSTRACTDifferent sanitization methods were evaluated as alternatives to formaldehyde fumigation for the reduction of eggshell and yolk sac microbiological counts, improvement of eggshell quality, incubation parameters, and day-old chick quality.

Non-typhoidal

Salmonella

The factors and mechanisms that govern tRNA stability in bacteria are not well understood. Here, we investigated the influence of posttranscriptional modification of bacterial tRNAs (tRNA modification) on tRNA stability. We focused on ThiI-generated 4-thiouridine (s4U), a modification found in bacterial and archaeal tRNAs. Comprehensive quantification of Vibrio cholerae tRNAs...

Journal of Food Protection, Volume 82, Issue 2, Page 189-193, February 2019.

Journal of Food Protection, Volume 82, Issue 2, Page 184-188, February 2019.

Animal feed has been linked to human illness through the food chain as a result of food borne bacteria and more recently the risk of foodborne antibiotic resistance. This study investigated the extent to which radiation can be used as an intervention to improve the safety and quality of poultry feed in terms of food borne pathogens and antibiotic resistant microbes.

Toxins, Vol. 11, Pages 61: Review of DSP Toxicity in Ireland: Long-Term Trend Impacts, Biodiversity and Toxin Profiles from a Monitoring Perspective

Toxins doi: 10.3390/toxins11020061

Authors:
Rafael Salas
Dave Clarke